Steps to contribute in the repository :

1. Fork this repository and clone it in your local systems.
2. Create a .gitignore file and add this content in that file : *.class *.exe *.bin *.json .cph/ .vscode/
3. Solve the issues or add new data structures, company specific or platform specific questions and the respective code in the respective folders.
4. If a folder related to a particular category does not exists , you can add new folders.
5. After solving, commit with a descent commit message and then push the code.After that,make a pull request for reviewing.